A new study reveals that the number of insects worldwide is decreasing, a decline that researchers say could be "catastrophic".

More than 40% of the world's insect species could become extinct in the coming decades leading to "catastrophic" results for the various ecosystems of the planet, says a new study.

The study published in April The edition of the peer-reviewed journal Biological Conservation said that dung beetles, butterflies, moths, bees and wasps are among those species that seem to be the most affected.

The study cites the loss of habitat due to "intensive agriculture and urbanization", pollution and climate change as key reasons for the rapid decline.

"The repercussions this will have for the planet's ecosystems are nothing short of catastrophic, since insects are at the structural and functional basis of many of the world's ecosystems", reads an article Extracted from the study conducted by 39. University of Sydney, of the University of Queensland and of the Chinese Academy of Agricultural Sciences.